Subtract 4/90 from 15/25, Solve 15/25

Subtract 4/90 from 15/25

15/25 - 4/90 is 5/9.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 25 × 18 = 450,
15/25 = 15 × 18/25 × 18 = 270/450
Likewise, for the 2nd fraction, since 90 × 5 = 450,
4/90 = 4 × 5/90 × 5 = 20/450
Subtract the two like fractions:
270/450 - 20/450 = 270 - 20/450 = 250/450
After reducing the fraction, the answer is 5/9

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